package com.ys.gulimall.product.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ys.common.utils.PageUtils;
import com.ys.common.utils.Query;
import com.ys.gulimall.product.dao.AttrGroupDao;
import com.ys.gulimall.product.entity.AttrEntity;
import com.ys.gulimall.product.entity.AttrGroupEntity;
import com.ys.gulimall.product.service.AttrGroupService;
import com.ys.gulimall.product.service.AttrService;
import com.ys.gulimall.product.vo.AttrGroupWithAttrsVo;
import com.ys.gulimall.product.vo.SpuItemAttrGroupVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrGroupService")
public class AttrGroupServiceImpl extends ServiceImpl<AttrGroupDao, AttrGroupEntity> implements AttrGroupService {
	
	@Resource
	private AttrService attrService;
	
	@Override
	public PageUtils queryPage(Map<String, Object> params) {
		IPage<AttrGroupEntity> page = this.page(
				new Query<AttrGroupEntity>().getPage(params),
				new QueryWrapper<AttrGroupEntity>()
		);
		
		return new PageUtils(page);
	}
	
	@Override
	public PageUtils queryPage(Map<String, Object> params, Long catelogId) {
		
		//select * from pms_attr_group where catelog_id=? and (attr_group_id=key or attr_group_name like %key%)
		String key = (String) params.get("key");
		
		//构造QueryWrapper
		QueryWrapper<AttrGroupEntity> wrapper = new QueryWrapper<AttrGroupEntity>();
		if (!StringUtils.isEmpty(key)) {
			wrapper.and((obj) -> {
				obj.eq("attr_group_id",key).or().like("attr_group_name",key);
			});
		}
		
		//如果传过来的三级分类id为0，就查询所有数据
		if (catelogId == 0) {
			IPage<AttrGroupEntity> page = this.page(
					new Query<AttrGroupEntity>().getPage(params),
					wrapper
			);
			return new PageUtils(page);
		} else {
			wrapper.eq("catelog_id",catelogId);
			IPage<AttrGroupEntity> page = this.page(new Query<AttrGroupEntity>().getPage(params),wrapper);
			return new PageUtils(page);
		}
	}
	
	/**
	 * 根据分类id查询出所有的分组以及这些组里面的属性
	 * @param catelogId
	 * @return
	 */
	@Override
	public List<AttrGroupWithAttrsVo> getAttrGroupWithAttrsByCatelogId(Long catelogId) {
		
		//1、查询分组信息
		List<AttrGroupEntity> attrGroupEntities = this.list(new QueryWrapper<AttrGroupEntity>().eq("catelog_id", catelogId));
		
		//2、查询所有属性
		List<AttrGroupWithAttrsVo> collect = attrGroupEntities.stream().map(group -> {
			AttrGroupWithAttrsVo attrGroupWithAttrsVo = new AttrGroupWithAttrsVo();
			BeanUtils.copyProperties(group,attrGroupWithAttrsVo);
			
			List<AttrEntity> attrs = attrService.getRelationAttr(attrGroupWithAttrsVo.getAttrGroupId());
			attrGroupWithAttrsVo.setAttrs(attrs);
			
			return attrGroupWithAttrsVo;
		}).collect(Collectors.toList());
		
		return collect;
	}
	
	@Override
	public List<SpuItemAttrGroupVo> getAttrGroupWithAttrsBySpuId(Long spuId, Long catalogId) {
		
		//1、查出当前spu对应的所有属性的分组信息以及当前分组下的所有属性对应的值
		AttrGroupDao baseMapper = this.getBaseMapper();
		List<SpuItemAttrGroupVo> vos = baseMapper.getAttrGroupWithAttrsBySpuId(spuId,catalogId);

		return vos;
		
	}

}